Solitaire Casino 21 is a very simple game!
All you need to do is turn the cards in order to make horizontal or vertical blackjack combos. This means you should try to get the addition of rows or columns to reach 21 or 20. If you go over that number, your points will go down.
Enjoy!

The cards are placed facing down and you have to turn them around to try and make blackjack combos horizontally or vertically. Scores are displayed at the end of every round and you can continue to the next round keeping your score.